Home / 18,896.38-28,343.55-5,747.72

Finding the Fourth Proportional to 18,896.38, 28,343.55 and 5,747.72

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Solution

The fourth proportional to 18,896.38, 28,343.55 and 5,747.72 is: 8,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.38 : 28,343.55 = 5,747.72 : x
  2. Step 2: Convert to fraction form
    18,896.38/28,343.55 = 5,747.72/x
  3. Step 3: Cross multiply
    18,896.38x = 28,343.55 × 5,747.72
  4. Step 4: Simplify right side
    18,896.38x = 162,910,789.21
  5. Step 5: Solve for x
    x = 162,910,789.21/18,896.38
  6. Step 6: Final answer
    x = 8,621.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.